A method and apparatus for multiplexing a reference signal from a User Equipment (UE), not having any other signal transmission in the respective Transmission Time Interval (TTI), with a reference signal from another UE also having data transmission in the respective TTI, or with the control signal and reference signal from another UE transmitted in the respective TTI. The multiplexed reference signal from the UE not having any other signal transmission in the respective TTI can serve as a sounding reference signal to enable the serving base station to apply link adaptation to a subsequent signal transmitted by the UE or it can serve as a reference signal conveying state information, such as resource request or service request.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for multiplexing a first signal type from a first user equipment with a first signal type from a second user equipment over a same bandwidth during a first set of symbols in a transmission time interval including the first set of symbols and a second set of symbols, the first signal type being constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence, the method comprising: transmitting, from the first user equipment, only the first signal type during the first set of symbols using a first parameter of the CAZAC-based sequence; transmitting, from the second user equipment, the first signal type during the first set of symbols using a second parameter of the CAZAC-based sequence; and transmitting, from the second user equipment, a second signal type over the same bandwidth as for the first signal type during at least one symbol in the second set of symbols.
2. The method as in claim 1 , wherein the first signal type includes a reference signal.
3. The method as in claim 1 , wherein the second signal type includes an information data signal.
4. The method as in claim 1 , wherein the first parameter and the second parameter of the CAZAC-based sequence include a first cyclic shift and a second cyclic shift of the CAZAC-based sequence, respectively.
5. A method for multiplexing a first signal type from a first user equipment with a first signal type and a second signal type from a second user equipment over a same bandwidth during a transmission time interval including a first set of symbols and a second set of symbols, the first signal type and the second signal type being constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence, the method comprising: transmitting, from first user equipment, the first signal type during the transmission time interval using a first parameter of the CAZAC-based sequence; transmitting, from the second user equipment, the first signal type during the first set of symbols using a second parameter of the CAZAC-based sequence; and transmitting, from the second user equipment, the second signal type over the same bandwidth as for the first signal type during at least one symbol in the second set of symbols using the second parameter of the CAZAC-based sequence.
6. The method as in claim 5 , wherein the first signal type includes a reference signal.
7. The method as in claim 6 , wherein the reference signal includes a release request signal.
8. The method as in claim 6 , wherein the reference signal includes a service request signal.
9. The method as in claim 5 , wherein the second signal type includes an acknowledgement signal.
10. The method as in claim 5 , wherein the second signal type includes a channel quality indication signal.
11. The method as in claim 5 , wherein the first parameter and the second parameter of the CAZAC-based sequence include a first cyclic shift and a second cyclic shift of the CAZAC-based sequence, respectively.
12. A system for transmitting a first signal type in a first transmission time interval and a first signal type and a second signal type in a second transmission time interval, each transmission time interval including a first set of symbols and a second set of symbols, the system comprising: a first transmitter for transmitting only the first signal type during the first set of symbols in the first transmission time interval; and a second transmitter for transmitting the first signal type during the first set of symbols in the second transmission time interval and for transmitting the second signal type during the second set of symbols in the second transmission time interval.
13. The system as in claim 12 wherein the first signal type is constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence.
14. The system as in claim 12 , wherein the first signal type comprises a reference signal.
15. The system as in claim 12 , wherein the second signal type comprises an information data signal.
16. A system for transmitting a first signal type in a first transmission time interval and a first signal type and a second signal type in a second transmission time interval, each transmission time interval including a first set of symbols and a second set of symbols, the system comprising: a first transmitter for transmitting only the first signal type in the first transmission time interval; and a second transmitter for transmitting the first signal type during the first set of symbols in the second transmission time interval and for transmitting the second signal type during the second set of symbols in the second transmission time interval.
17. The system as in claim 16 wherein the first signal type and the second signal type are constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence.
18. The system as in claim 16 , wherein the first signal type comprises a reference signal.
19. The system as in claim 18 , wherein the reference signal comprises a release request signal.
20. The system as in claim 18 , wherein the reference signal comprises a service request signal.
21. The system as in claim 16 , wherein the second signal type comprises an acknowledgement signal.
22. The system as in claim 16 , wherein the second signal type comprises a channel quality indication signal.
23. A system for receiving a first signal type in a first reception time interval and for receiving a first signal type and a second signal type in a second reception time interval, each reception time interval including a first set of symbols and a second set of symbols, the system comprising: a first receiver for receiving only the first signal type during the first set of symbols in the first reception time interval; and a second receiver for receiving the first signal type during the first set of symbols in the second reception time interval and for receiving the second signal type during the second set of symbols in the second reception time interval.
24. The system as in claim 23 , wherein the first signal type is constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence.
25. The system as in claim 23 , wherein the first signal type comprises a reference signal.
26. The system as in claim 23 , wherein the second signal type comprises an information data signal.
27. A system, for receiving a first signal type in a first reception time interval and for receiving a first signal type and a second signal type in a second reception time interval, each reception time interval including a first set of symbols and a second set of symbols, the system comprising: a first receiver for receiving only the first signal type in the first reception time interval; and a second receiver for receiving the first signal type during the first set of symbols in the second reception time interval and for receiving the second signal type during the second set of symbols in the second reception time interval.
28. The system as in claim 27 , wherein the first signal type and the second signal type are constructed from a Constant Amplitude Zero Auto-Correlation (CAZAC)-based sequence.
29. The system as in claim 27 , wherein the first signal type comprises a reference signal.
30. The system as in claim 29 , wherein the reference signal comprises a release request signal.
31. The system as in claim 29 , wherein the reference signal comprises a service request signal.
32. The system as in claim 27 , wherein the second signal type comprises an acknowledgement signal.
33. The system as in claim 27 , wherein the second signal type comprises a channel quality indication signal.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 30, 2008
April 10, 2012
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